All around, the universe is forever changing with each passing year.
Our sun, from internal nuclear reactions, loses ~1017 kilograms of mass per year.
Consequently, the Earth spirals outward, increasing our orbital radius by 1.5 cm (0.6 in) per year.
gravitational interactions slow our planet’s rotation; a day 14 microseconds longer than last year.
The distance between the Moon and Earth is lengthening by 3.8 cm (1.5 in) per year, making total solar eclipses rarer and shorter.
Stellar evolution causes our Sun to heat up, becoming 0.0000005% brighter each year.
Across the Milky Way, about 5 new low-mass stars formed last year.
This is less than 0.0000001% of the 45 billion solar masses of new stars that are formed annually throughout the visible universe.
Nearly 50 million new supernovae occurred within the visible universe last year.
The leftover glow from the Big Bang – the cosmic microwave background – is 200 pK cooler than it was a year ago.
Our cosmic horizon, which limits what we can see, is growing annually by 60 trillion km: 6.5 light-years.
The number of observable galaxies is also growing: by about 35,000 annually.
But fewer stars can be reached; This number decreases by about 20 million per year.
Every year, the universe changes accumulating, changing our universe forever.
Mostly Mute Monday tells an astronomical story with pictures and visuals and no more than 200 words. taciturn; smile more.